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The highest motorway

The M62 is the highest motorway in the UK, reaching 1,220 feet (372m) AOD near to the boundary between Lancashire and Yorkshire close to the Pennine Way footbridge. The M6, passing over Shap, in Cumbria, reaches 1,040 feet (317m) AOD and is probably the second highest motorway, although the M74 at Beattock is thought to be at a very similar height. (AOD="Above Ordnance Datum", ostensibly sea-level)